TM 10-6640-238-13 4-170 4-70.    TRAY RACK. This task consists of: a. Remove b. Install INITIAL SET-UP Tools Required General Mechanics Tool Kit, (Appendix B, Section III, Item 1) Portable Electric Drill, (Appendix B, Section III, Item 2) Twist Drill Set, (Appendix B, Section III, Item 2) Hand Blind Riveter, (Appendix B, Section III, Item 3) Materials/Parts Required Rivets, (10) Equipment Condition Fuel Sampling Kit Removed (Paragraph 4-74) REMOVE Remove Tray Rack.  See Figure 4-66. a. Open cabinet W to gain access to hardware. b. Remove three trays (1) from tray rack (2) c. Remove four screws (3) and two brackets (4) securing tray rack (2) to cabinets. d. Remove ten rivets (5) and tray rack (2). e. Remove four screws (6) from each channel (7) and remove channels. INSTALL Install Tray Rack.  See Figure 4-66. a. Install two channels (7) and secure each channel with four screws (6). b. Install tray rack (2) and secure with ten rivets (5). c. Install two brackets (4) and secure with four screws (3). d. Install three trays (1) into tray rack (2). e. Install fuel sampling kit.  (Paragraph 4-74)